Between 2016 to 2017, a review was donated on the alternative liquidity pools, known as Citi Match in Citigroup Global Markets Asia Limited. The bank system had defaulted certain clients as allowed to match trades in Citi Match, when their orders should not have been enabled access to ALP. In August 2016, it was discovered that the default setting of over 470 clients was incorrect and the orders of over 130 clients were routed to Citi Match for execution. The clients were not assessed if they are qualified investors and, therefore did not provide them with the ALP Guidelines. (All affected clients qualified investors.)

“Dark pool” trades are officially known as alternative liquidity pools in Hong Kong. The platform allows investors to trade shares anonymously, with information of their orders being spread and affecting the price.